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Distance formula
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College Algebra CMC

QuestionAnswer
Distance formula d=square root of (x2-x1)^2 + (y2-y1)^2
Midpoint (x1+x2/2, y1+y2/2)
Circle r^2=(x-h)^2 + (y-k)^2
Slope y2-y1/x2-x1
if line slants from left to right its positive
if line slants from right to left its negative
horizontal line has zero slope (y=zero)
vertical line has undefined slope (x=undefined)
point-slope equation y-y1=m(x-x1)
(f+g)(x) F(x)+G(x)
(F/G)(x) F(x)/G(x)
Created by: amberhenson
 

 



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